I just noticed TAK-Qt-v0.9.1.3-Win has been released, yet the -datadir option still doesn't work. Any word on this?
This was the last report we got from the dev
im looking into the -datadir thing here too this weekend
I have a message into him for an update.
Alright, waiting for an update!

My guess is that it has to do with the build settings, as all my other wallets (that work with the -datadir option) aren't standalone executable files.